Strophomenata - Productida - Productidae
Parent taxon: Leioproductinae according to A. Williams et al. 2000
Sister taxa: Leioproductini, Semiproductini, Tyloplectini
Subtaxa: Bailliena Bruntonia Horridoniina Rugoclostus Sowerbiina
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Permian of Canada (24: British Columbia, Northwest Territories, Nunavut, Yukon collections), China (10), Germany (13), Greece (4), Greenland (42), Japan (1), Laos (1), Lithuania (16), New Zealand (3), Pakistan (1), Poland (8), the Russian Federation (16), Svalbard and Jan Mayen (10), the United Kingdom (32), United States (27: Alaska, Montana, Texas)
• Carboniferous of Canada (4: Yukon), the Russian Federation (1), Svalbard and Jan Mayen (2), United States (3: Alaska, Montana)
Total: 218 collections including 237 occurrences